Home / 405,831.20-608,746.80-403,498.40

Finding the Fourth Proportional to 405,831.20, 608,746.80 and 403,498.40

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Solution

The fourth proportional to 405,831.20, 608,746.80 and 403,498.40 is: 605,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,831.20 : 608,746.80 = 403,498.40 : x
  2. Step 2: Convert to fraction form
    405,831.20/608,746.80 = 403,498.40/x
  3. Step 3: Cross multiply
    405,831.20x = 608,746.80 × 403,498.40
  4. Step 4: Simplify right side
    405,831.20x = 245,628,359,805.12
  5. Step 5: Solve for x
    x = 245,628,359,805.12/405,831.20
  6. Step 6: Final answer
    x = 605,247.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.